Pressure Washers
Commercial: Smaller in size, 3000rpm motors, Occasional use, 100hours between services.
Industrial: Large capacity tanks, 1450rpm motors, Frequent use. 200hours between services.
Basic Principal:
Most units have pumps with brass manifolds. Water is pumped when the pistons reciprocate powered by a motor, engine or PTO link. The backward piston stroke draws water in through the inlet valve and fills the manifold chamber. The closed outlet valve allows this suction to occur. The forward piston stoke expels the water from the manifold chamber through the outlet valve. The closed inlet valve allows this compression to occur.
Pump styles:
Crank- piston is pulled and pushed
Swash/Wobble Plate - piston is pushed but returns using a spring
Water Heating:
The most common Hot Wash uses an oil fired heat exchanger (28 sec heating oil or diesel) The water pases through a length of tube after leaving the pump. The tube is usually manufactured into a cylindrical coil and mounted either vertically or horizontal. The fuel is injected into the heat exchanger and ignited. The combustion is forced using air blown into the chamber by a fan. Hot gases exhaust through the chimney after passing the coil and transfering heat to the water.
A small number of machines use immersion heaters instead of the oil fired heat exchanger . Water is pre-heated in large tanks before it is drawn through the pump and out to the user. Immersion heaters are used to avoid fumes but have a limited heating capability.
Cleaning Fluids:
Chemicals are used with Pressure Washers to remove oil, kill bacteria or apply a particular finish. Chemical can be drawn in with the water and pumped at high pressure or added at the outlet of the machine using a low pressure injector. Generally most Hot water machines are supplied with a high pressure chemical system. Cold water machines usually use the low pressure chemical system. Not all chemicals are 'pump safe' and so the low pressure injector is sometimes fitted to hot water machines so as to avoid pump damage.
Steam Generators
Super heated steam for sanitation and fat removal.
Water is heated using an electrical immersion heater. The heater continues to heat the water over boiling point inside a pressurised tank. Once the heat has built up the unit is ready for use. An insulated hose feeds the steam to a gun where the output is controlled via a trigger gun. Proffessioanal machines have a second tank for cold water which feeds into the heater as steam is used. The machine will maintain the temperature of the steam to allow continous use.
Floor Care
Floor Sweepers:
Floor Scrubbers:
Floor Polishers:
Vacuums:
Compressors
« Back To Shop Online Page
|
|
